205501012 has 24 divisors (see below), whose sum is σ = 366508800. Its totient is φ = 100791936.

The previous prime is 205501007. The next prime is 205501013. The reversal of 205501012 is 210105502.

It is a super-3 number, since 3×205501012³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205501013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203164 + ... + 204172.

It is an arithmetic number, because the mean of its divisors is an integer number (15271200).

Almost surely, 2^205501012 is an apocalyptic number.

It is an amenable number.

205501012 is a deficient number, since it is larger than the sum of its proper divisors (161007788).

205501012 is a wasteful number, since it uses less digits than its factorization.

205501012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1935 (or 1933 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 205501012 is about 14335.3064843414. The cubic root of 205501012 is about 590.1168130291.

Adding to 205501012 its reverse (210105502), we get a palindrome (415606514).

The spelling of 205501012 in words is "two hundred five million, five hundred one thousand, twelve".